nice tricoder project! sadly it also seems to be only in the VIS-spectrum 400-700nm. would be much more interesting to hav UV-VIS...
i guess people on this list also know about the publiclab spectro stuff...
http://publiclab.org/wiki/spectrometer-curriculum
generally, i always want to stress, it's much more useful to "look" through a sample, than just at different qualities of light sources.
best,
m
On Sep 11, 2013 8:19 PM, "Josiah Zayner" <josiah.zayner@gmail.com> wrote:
--Open Tricorder Spectrophotometerhttp://www.tricorderproject.org/blog/?p=206
On Saturday, September 7, 2013 5:17:15 AM UTC-5, Marc Dusseiller wrote:hello fellow bio-tinkerers, hi sebastian,the topic of cheap turbidity meters popped up again in another discussion.i have been developing simple laser-cut shields for arduinos. or also stand-alone units to measure light-absorbtion through the standarized cuvettes:sorry for the lousy docu sofar...http://hackteria.org/wiki/index.php/DIY_spectrophotometer#BabyTurbiduino_aka_Daphna-2-MIDI_Converterlaser cutting seems to me more useful for this application. good precision and much faster production. the cut sides of the wood is nice black and light absorbin/non-reflecting. and the device can be assembled layer by layer, embedding the LED and sensors into an optical channel.at the moment we are using something like a digistump clone, we call it babygnusbuino, based on attiny85 and compatible to arduino ide. it can send/receive data as a midi-device and costs less than 5$. but we have been thinking of additionally communicating to the device using an audio-protocol, meaning we could use the line-in of a smart phone to read the data.more soon,marc
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